O: medial half of clavicle - sternal head (manubrium and body of sternum) - upper six costal cartilages

A: Adducts and medially rotates humerus-Draws scapula anteriorly and inferiorly Acting alone-Clavicular head flexes humeru-Sternocostal head extends the Humerus from the flexed position

I: medial aspect of coracoid process of scapula

A: stabilizing of scapula by pulling it downward and forward

A: it depresses the clavicle (protection of clavicle from dislocation and stabilize it) - protect subclavian vessels and superior trunk of brachial plexus

I:muscle fibers of upper 4 ribs anterior surface of superomedial angle and medial border of scapula while fibers from 5-8 converge on the anterior surface of inferior angle of the scapula.

A: Protracts scapula and holds it against thoracic wall-Rotates scapula

N.S: upper and lower subscapular n. C5-C6-C7

A: rotates arm medially-hold head of Humerus in glenoid cavity

O: lumber region & lower part of thorax (Spinous processes of inferior 6 thoracic vertebrae (there are variations) -Thoracolumbar fascia-Iliac crest-Inferior 3 or 4 ribs)

A: Extends, adducts, and medially rotates Humerus , Raises body toward arms during climbing.

O: lower 1/3 of posterior surface of the lateral border of scapula

A: Helps flex and adduct arm; resists dislocation of shoulder

I: bicipital tuberosity of radius & by mean of bicipital aponeurosis into the deep fascia of medial aspect of forearm.

A: Supinates Forearm-Flexes forearm- Short head resists dislocationof shoulder-weak flexor of shoulder

O: The long head originates from supraglenoid tubercle of the scapula & the short head arises from tip of coracoid process of the scapula

I: lateral part of clavicle, acromion & spine of the scapula.

N.S: spinal accessory nerve XI & proprioceptive fibers from C3 & 4

O: ligamentum nuchae, external occipital protuberance & superior nuchal line & thoracic and C7-C8 spinous processes

A: Descending part elevates the shoulder-Ascending part depresses the shoulde-Middle part (or all parts together) retracts scapula-Descending & ascending parts act together to rotate glenoid cavity superiorly

I: medial border of the scapula opposite the supraspinous fossa

N.S: dorsal scapular nerve (C5)- Cervical nerve C3-C4

O: transverse processes of the upper four cervical vertebrae

A: Elevates scapula - Rotates its glenoid cavity inferiorly by rotating scapula

I: medial border of scapula opposite the root of the spine

O: ligamentum nuchae & spines of C7 & T1 vertebrae

A: Retract scapula and rotate its glenoid cavity inferiorly-Fix scapula to thoracic wall

I: medial border of scapula opposite infraspinous fossa

O: spines of T2 to T5 vertebrae & the corresponding supraspinous ligament

A: Retract scapula and rotate its glenoid cavity inferiorly-Fix scapula to thoracic wall

O: lateral 1/3 rdof the clavicle, acromion & spine of scapula

A: Clavicular (anterior) part flexes and medially rotates arm assists Pectoralis major m. - Acromial (middle) part abducts arm from 15 angle- Spinal (posterior) part: extends & laterally rotates arm assists Latissimus Dorsi m.

I: upper facet of greater tubercle of humerus

A: Initiates and assists deltoid in abduction of arm and acts with rotator cuff muscles

A: Laterally rotates arm; and acts with rotator cuff

I: middle facet of greater tubercle of humerus

O: upper 2/3 rd of posterior surface of lateral border of the scapula

A: Laterally rotates arm; and acts with rotator cuff

I: anterior surface of coronoid process of ulna

N.S: musculocutaneous nerve C5 & C6 - Radial Nerve C5 & C7

A: the main flexor of the forearm-flexes the forearm in all positions, not being affected by pronation and supination; during both slow and quick movements; and in the presence or absence of resistance

I: The heads unite to be inserted into upper border of olecranon process of ulna

O: Long head: infraglenoid tubercle of scapula- Lat. head; upper half of the post. surface of humerus above the spiral groove- Med. head; lower half of the post. surface of humerus below the spiral groove

A: The Long Head aids in extension and adduction of the arm-The Medial Head is the workhorse of forearm extension active at all speeds and in the presence or absence of resistance-The Lateral Head is the strongest but is it recruited into activity primarily against resistance -Pronation and Supination of the forearm do not affect triceps operation

O: common flexor tendon medial humeral epicondyle

O: common flexor tendon medial humeral epicondyle

A: Flexes hand (at wrist Joint) and tenses palmar aponeurosis

I: inserted into pisiform bone & by mean of two ligaments, pisohamate & pisometacarpal, into hook of hamate & base of 5 th metacarpal bone respectively

O: common flexor tendon medial humeral epicondyle - ulnar head: med. side of olecranon process & post. border of ulna

O: common flexor tendon medial humeral epicondyle - Radial head: arises from oblique line on ant. surface of shaft of radius

A: Flexes middle phalanges at proximal interphalangeal joints of middle four digits; acting more strongly, it also flexes proximal phalanges at metacarpophalangeal joints

O: humeral head medial epicondyle - ulnar head from med. side of coronoid process

A: Pronates and Flexes Forearm (at elbow Joint)

I: flexor retinaculum & palmar aponeurosis

N.S: ant. interosseous n. from Median N. C8 & T1

O: middle of ant. surface of shaft of radius & adjoining interosseous membrane

A: Primarily, Flexes distal phalanx of first digit (thumb) at the interphalangeal joint-Secondary, the proximal phalanx and first metacarpal at the metacarpophalangeal and carpometacarpal joint

N.S: medial part Ulnar Nerve C8 & T1 - lateral part Anterior interosseous nerve from Median Nerve C8 & T1

O: upper 3/4 th of ant. & med. surfaces of shaft of ulna & the adjoining part of interosseous membrane

A: Flexes distal phalanges of medial four fingers at distal interphalangeal joints

I: lower quarter of anterior surface of shaft of radius

O: lower 1/4 th of the anterior surface of shaft of ulna

A: pronates forearm at the superior & inferior radioulnar joints

O: upper 2/3rd of lat. supracondylar ridge of humerus & adjoining lat. inter-muscular septum

A: weak flexion of forearm; maximal when forearm is in midpronated position

I: posterior surface of the base of 2nd metacarpal bone

O: lower 1/3 of the lat. supracondylar ridge & the adjoining lat. inter-muscular septum

I: posterior surface of base of 3rd metacarpal bone

I:posterior surface of medial middle and distal phalanges

I: lateral surface of olecranon process of ulna

O: posterior aspect of lateral humeral epicondyle

I: posterolateral surface of neck of radius to be inserted into post., lat., & ant. aspects of neck of radius & upper part of shaft of radius

O: lateral humeral epicondyle, lat. collateral lig. of elbow joint & annular lig. of sup. radioulnar joint

I: post. surface of base of 1s metacarpal bone

N.S: Posterior Interosseous nerve; continuation of Deep Branch of Radial N. C7 & C8

O: middle of posterior surfaces of shaft of ulna & radius & interosseous membrane in between

I: posterior surface of the base of the proximal phalanx of thumb

N.S: Posterior Interosseous nerve; continuation of Deep Branch of Radial N. C7 & C8

O: posterior surface of radius below the origin of the abductor pollicis longus & adjacent part of interosseous membrane

A: Extends Proximal phalanx of thumb at metacarpophalangeal Joint-Extends carpometacarpal joints

I: post. surface of the base of distal phalanx of thumb

N.S: Posterior Interosseous nerve; continuation of Deep Branch of Radial N. C7 & C8

O: posterior surface of ulna below origin of abductor pollicis longus & adjacent part of interosseous membrane

A: Extends distal phalanx of thumb at interphalangeal Joint-Extends metacarpophalangeal and carpometacarpal joints

N.S: Posterior Interosseous nerve; continuation of Deep Branch of Radial N. C 7 & C 8

O: posterior surface of ulna below origin of extensor pollicis longus & adjacent part of interosseous membrane

A: Extends Second digit (index)-Helps extend the hand at wrist